PHP 8 issues Fatal error: Uncaught DivisionByZeroError

[Jimmi08]

Fatal error: Uncaught DivisionByZeroError: Division by zero in ***\e107_plugins\log\stats.php:1820 Stack trace: #0 ***\e107_plugins\log\stats.php(212): siteStats->renderDaily() #1 ***\index.php(69): include_once('C:\\xampp8.0\\htd...') #2 {main} thrown in ***\e107_plugins\log\stats.php on line 1820

Maybe it is related just to PHP 8 or it is because first installation (no data available)

there is this code:

foreach($dayarray as $date => $total) 
		{
			if (!isset($total['daytotal'])) $total['daytotal'] = 0;
			list($year, $month, $day) = explode("-", $date);
			$date = strftime ("%A, %B %d", mktime (0,0,0,$month,$day,$year));
			$barWidth = round(($total['daytotal']/$ttotal) * 100, 2);
			$text .= "<tr>
			<td class='forumheader3' style='width: 30%;'>$date</td>
			<td class='forumheader3' style='width: 70%;'>".$this -> bar($barWidth, $total['daytotal'])."</td>
			</tr>\n";
		}

and
Array

(
    [2021-08-17] => Array
        (
        )

)

var_dump($ttotal); - NULL